Metal-sash-bar joint.



J. J. CHBVIRON. METAL SASH BAR JOINT. APPLICATION FILED D20. 26, 1913.

1,114,731. 1' Patented 0011.27, 1914 E I I I $4 1513 V I 1 d 3 61 V c LA e L J, b- LNJ ABM wiTnfissss \NVEHTOR Maw JULIAN J. onnvmon, ornn'rnox'r, MICHIGAN.

METAL-SASH-BAR JOINT.

Specification of Letters latent. Application filed December 26, 1918.Serial No. 808,685.

Patented Oct. 27, 1914.

To all whom it may concern:

Be it known that I, JULIAN J. CHEvIRoN, a citizen of the United States,residing at Detroit, county of Wayne, State of Michigan, have invented acertain new and useful Improvement in Metal-Sash-Bar Joints, and declarethe following to be a full, clear, and exact description of the same,such as will enable others skilled in the art to which it pertains tomake and use the same, reference bar provided with a slot passing partlybeing bad to the. accompanying drawings, which form a part of thisspecification.

This invention relates to metal sash bar joints and comprises a jointlocked by a tongue from the web of one bar passing through a hole in theother bar.

In the drawings Figure 1, is a perspective of the two sash bars inposition to be interengaged. Fig. 2, is a section through the web of thebars showing them interengaged and the tongue in position to be forcedinto interlocked engagement. Fig. 3, is a similarview showing the tongueforced into interlocking position.

' There are a great many metal sash bar interlocks but many of theserequire the bending of one bar or the other so that it tends to weakenthe bar. I avoid this by cutting out and striking up a tongue in the webof one of the bars which interlocks in a hole in the other bar. T barsare preferably employed, one being provided with a slot (1 completelythrough the web and the other having its flanges completely cut away asat b to allow the flange of the other bar to pass through it. A tongue 0is cut out of the bar having the slot a in its web before this slot (1is cut. This tongue 0 is partially folded up or upset so as to be at oneside of the slot at when this slot is cut or made. The tongue bends atits mid-portion so as to buckle. The slot (1 is located slightly to oneside from the position in the web that the end of the tongue 0 occupiesbefore it is folded up. This leaves a notch 03 on the other side of theslot at. A

hence when the right-hand bar is fitted into the slot a of the left-handbar the hole e will come adjacent to the-end of the tongue 0. Bystriking the tongue 0 a blow it can be forced not only through the holee but into the recess d, thereby securelylocking the two bars together.Of course, the notch 03 could be eliminated but it is preferable to useit.

What I claim is 1. A joint, having in combination, a metal cross-wise ofthe bar, a portion of the metal that would ordinarily be removed forsuch slot being preserved as the end of a tongue, the said tonguecomprising such portion and the metal included between two outs runningangularly away from said cross slot, and a second metal bar adapted tofit into the said cross slot and provided with a hole adapted toregister with the end of the tongue, the said tongue being driven intothe hole of the second metal bar and through the same.

2. A joint, having in combination, a metal bar provided with I a slotpassing partly cross-wise of the bar, a portion of the metal oppositeside, a second metal-bar adapted to fit into the said cross slot andprovided with a hole adapted to register with the end of the tongue, thesaid tongue being driven completely through the hole of the second metalbar and into the recess formed on the opposite side.

In testimony whereof, I- slgn thls speclfication in the presence of twowltnesses.

JULIAN J CHEVIRON.

Witnesses:

STUART C. BARNES, -CHARLES A. WAGNER.

